l对象754名调查对象均为江西省省直机关干部。其中男性699人，占92．7％，女性55人，为7．3％。年龄45～93岁。将体检者分为三组，45～59岁为老年前期，60～79岁为老年期，80岁以上为长寿期。2结果和分析本组病例均以28个牙统计。牙列缺失：指上颌、下颌或上下颌牙齿全部缺失。 l The target of 754 subjects were all provincial officials of Jiangxi Province. Of these, 699 were men, accounting for 92.7%, and 55 were women, 7.3%. Age 45 to 93 years old. The physical examination will be divided into three groups. The 45-59 years old will be the pre-elderly period, the 60-79 years old will be the old age, and the 80-year-old or older will be the longevity period. 2 results and analysis of this group of patients were 28 teeth statistics. Loss of dentition: All missing teeth in maxilla, mandible, or upper and lower jaws.